<article id="wikiArticle">
<div> <div class="blockIndicator nonStandard nonStandardHeader">
<p><strong><span class="icon-only-inline" title="This API has not been standardized."><i class="icon-warning-sign"> </i></span> 非标准</strong><br/>
      该特性是非标准的，请尽量不要在生产环境中使用它！</p>
</div></div>
<p><strong><code>function.displayName</code></strong> 属性获取函数的显示名称</p>
<h2 id="Description_描述">Description 描述</h2>
<p>当一个函数的 <code>displayName</code> 属性被定义，这个函数的 <code>displayName</code> 属性将返回显示名称。</p>
<pre><code  class="language-javascript">function doSomething() {}

console.log(doSomething.displayName); // "undefined"

var popup = function(content) { console.log(content); };

popup.displayName = 'Show Popup';

console.log(popup.displayName); // "Show Popup"
</code></pre>
<p>可以在函数表达式重定义函数的显示名称<a href="Reference/Functions" title="有关更多示例和说明，请参阅有关函数的JavaScript指南。">function expression</a>:</p>
<pre><code  class="language-javascript">var object = {
  someMethod: function() {}
};

object.someMethod.displayName = 'someMethod';

console.log(object.someMethod.displayName); // logs "someMethod"

try { someMethod } catch(e) { console.log(e); }
// ReferenceError: someMethod is not defined
</code></pre>
<p>可以动态修改函数的显示名称：</p>
<pre><code  class="language-javascript">var object = {
  // anonymous
  someMethod: function(value) {
    arguments.callee.displayName = 'someMethod (' + value + ')';
  }
};

console.log(object.someMethod.displayName); // "undefined"

object.someMethod('123')
console.log(object.someMethod.displayName); // "someMethod (123)"
</code></pre>
<h2 id="Examples_例子">Examples 例子</h2>
<p>这个显示名称通常在控制台和配置文件中，用它来提醒对它背后的真实函数名 <a href="Reference/Global_Objects/Function/name" title="name 属性返回一个函数声明的名称。"><code>func.name</code></a>的引用。例如：</p>
<p>通过如下的举例，显示的名称应该显示像"function My Function()"</p>
<pre><code  class="language-javascript">var a = function() {};
a.displayName = 'My Function';

a; // "function My Function()"</code></pre>
<h2 id="Specifications_规范">Specifications 规范</h2>
<p>不属于任何规范</p>
<h2 id="Browser_compatibility_浏览器兼容性">Browser compatibility 浏览器兼容性</h2>
<p>如果你愿意贡献数据，请访问<a class="external" href="https://github.com/mdn/browser-compat-data" rel="noopener">https://github.com/mdn/browser-compat-data</a>并同时给我们发送推送请求。</p>
<div><div class="blockIndicator warning"><strong><a class="external" href="https://github.com/mdn/browser-compat-data" rel="noopener">We're converting our compatibility data into a machine-readable JSON format</a></strong>.
            This compatibility table still uses the old format,
            because we haven't yet converted the data it contains.
            <strong><a class="new" href="/zh-CN/docs/MDN/Contribute/Structures/Compatibility_tables" rel="nofollow">Find out how you can help!</a></strong></div>
<div class="htab">
<a id="AutoCompatibilityTable" name="AutoCompatibilityTable"></a>
<ul>
<li class="selected"><a>Desktop</a></li>
<li><a>Mobile</a></li>
</ul>
</div></div>
<div id="compat-desktop">
<table class="compat-table">
<tbody>
<tr>
<th>Feature</th>
<th>Chrome</th>
<th>Firefox (Gecko)</th>
<th>Internet Explorer</th>
<th>Opera</th>
<th>Safari</th>
</tr>
<tr>
<td>Basic support</td>
<td><span style="color: rgb(255, 153, 0);" title="Compatibility unknown; please update this.">?</span></td>
<td><a href="/en-US/Firefox/Releases/13" title="Released on 2012-06-05.">13</a> (13)</td>
<td><span style="color: rgb(255, 153, 0);" title="Compatibility unknown; please update this.">?</span></td>
<td><span style="color: rgb(255, 153, 0);" title="Compatibility unknown; please update this.">?</span></td>
<td><span style="color: rgb(255, 153, 0);" title="Compatibility unknown; please update this.">?</span></td>
</tr>
</tbody>
</table>
</div>
<div id="compat-mobile">
<table class="compat-table">
<tbody>
<tr>
<th>Feature</th>
<th>Android</th>
<th>Chrome for Android</th>
<th>Firefox Mobile (Gecko)</th>
<th>IE Mobile</th>
<th>Opera Mobile</th>
<th>Safari Mobile</th>
</tr>
<tr>
<td>Basic support</td>
<td><span style="color: rgb(255, 153, 0);" title="Compatibility unknown; please update this.">?</span></td>
<td><span style="color: rgb(255, 153, 0);" title="Compatibility unknown; please update this.">?</span></td>
<td><span style="color: rgb(255, 153, 0);" title="Compatibility unknown; please update this.">?</span></td>
<td><span style="color: rgb(255, 153, 0);" title="Compatibility unknown; please update this.">?</span></td>
<td><span style="color: rgb(255, 153, 0);" title="Compatibility unknown; please update this.">?</span></td>
<td><span style="color: rgb(255, 153, 0);" title="Compatibility unknown; please update this.">?</span></td>
</tr>
</tbody>
</table>
</div>
</article>